package com.xxl.job.core.thread;

import cn.hutool.core.convert.Convert;
import com.xxl.job.core.biz.AdminBiz;
import com.xxl.job.core.biz.model.RegistryParam;
import com.xxl.job.core.biz.model.ReturnT;
import com.xxl.job.core.enums.RegistryConfig;
import com.xxl.job.core.executor.XxlJobExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.TimeUnit;

/**
 * Created by xuxueli on 17/3/2.
 */
public class ExecutorRegistryThread /*extends Thread*/ {
    private static Logger logger = LoggerFactory.getLogger(ExecutorRegistryThread.class);

    private static ExecutorRegistryThread instance = new ExecutorRegistryThread();
    private static long REGISTRY_LAZY = 10000;
    private Thread registryThread;
    private volatile boolean toStop = false;

    public static ExecutorRegistryThread getInstance() {
        return instance;
    }

    public void start(final String appName, final String address, final String registryLazy) {

        // valid
        if (appName == null || appName.trim().length() == 0) {
            logger.warn(">>>>>>>>>>> xxl-job, executor registry config fail, appName is null.");
            return;
        }
        if (XxlJobExecutor.getAdminBizList() == null) {
            logger.warn(">>>>>>>>>>> xxl-job, executor registry config fail, adminAddresses is null.");
            return;
        }

        REGISTRY_LAZY = Convert.toLong(registryLazy, 10000L);

        registryThread = new Thread(new Runnable() {
            @Override
            public void run() {

                // 首次主次延迟 REGISTRY_LAZY 毫秒， 防止尚未启动完成时，注册失败
                if (REGISTRY_LAZY > 0) {
                    try {
                        Thread.sleep(REGISTRY_LAZY);
                    } catch (InterruptedException e) {
                        logger.error(">>>>>>>>>>> xxl-job 首次注册延迟失败, appName:{}, address:{}", new Object[]{appName, address});
                    } finally {
                        REGISTRY_LAZY = 0;
                    }
                }

                // registry
                while (!toStop) {
                    try {
                        RegistryParam registryParam = new RegistryParam(RegistryConfig.RegistType.EXECUTOR.name(), appName, address);
                        for (AdminBiz adminBiz : XxlJobExecutor.getAdminBizList()) {
                            try {
                                ReturnT<String> registryResult = adminBiz.registry(registryParam);
                                if (registryResult != null && ReturnT.SUCCESS_CODE == registryResult.getCode()) {
                                    registryResult = ReturnT.SUCCESS;
                                    logger.info(">>>>>>>>>>> xxl-job registry success, registryParam:{}, registryResult:{}", new Object[]{registryParam, registryResult});
                                    break;
                                } else {
                                    logger.info(">>>>>>>>>>> xxl-job registry fail, registryParam:{}, registryResult:{}", new Object[]{registryParam, registryResult});
                                }
                            } catch (Exception e) {
                                logger.info(">>>>>>>>>>> xxl-job registry error, registryParam:{}", registryParam, e);
                            }

                        }
                    } catch (Exception e) {
                        logger.error(e.getMessage(), e);
                    }

                    try {
                        TimeUnit.SECONDS.sleep(RegistryConfig.BEAT_TIMEOUT);
                    } catch (InterruptedException e) {
                        logger.warn(">>>>>>>>>>> xxl-job, executor registry thread interrupted, error msg:{}", e.getMessage());
                    }
                }

                // registry remove
                try {
                    RegistryParam registryParam = new RegistryParam(RegistryConfig.RegistType.EXECUTOR.name(), appName, address);
                    for (AdminBiz adminBiz : XxlJobExecutor.getAdminBizList()) {
                        try {
                            ReturnT<String> registryResult = adminBiz.registryRemove(registryParam);
                            if (registryResult != null && ReturnT.SUCCESS_CODE == registryResult.getCode()) {
                                registryResult = ReturnT.SUCCESS;
                                logger.info(">>>>>>>>>>> xxl-job registry-remove success, registryParam:{}, registryResult:{}", new Object[]{registryParam, registryResult});
                                break;
                            } else {
                                logger.info(">>>>>>>>>>> xxl-job registry-remove fail, registryParam:{}, registryResult:{}", new Object[]{registryParam, registryResult});
                            }
                        } catch (Exception e) {
                            logger.info(">>>>>>>>>>> xxl-job registry-remove error, registryParam:{}", registryParam, e);
                        }

                    }
                } catch (Exception e) {
                    logger.error(e.getMessage(), e);
                }
                logger.info(">>>>>>>>>>> xxl-job, executor registry thread destory.");

            }
        });
        registryThread.setDaemon(true);
        registryThread.start();
    }

    public void toStop() {
        toStop = true;
        // interrupt and wait
        registryThread.interrupt();
        try {
            registryThread.join();
        } catch (InterruptedException e) {
            logger.error(e.getMessage(), e);
        }
    }

}
